upgrade sidekiq to 3.1 and sidekiq dependents

Additionally upgrade sidetiq and sidekiq-failures.
upgrade every bundled gem in bounds.
add new bounds for rails_config

Versions greater than 0.3 (0.4 series and up) won't
work for us, as they require to be loaded inside
a rails environment.
Merge pull request #932 from ontohub/perform_necessary_upgrades

Perform necessary upgrades